设计合成了新型含硫代半卡巴肼结构的香豆素类I-荧光分子探针CI,其结构用1H NMR,13C NMR,GC/MS和元素分析进行了表征,并考察了其光谱性能.结果表明CI在中性缓冲溶液中,在常见阴离子(F-,Cl-,Br-,I-,AcO-,HSO-4,H2PO-4)中能够专一性地识别I-.滴加I-后引起吸收光谱蓝移80 nm,荧光光谱蓝移6 nm,荧光增强5.9倍,溶液荧光由黄绿色变为亮蓝色.其它阴离子的存在并未干扰CI对I-的检测. A novel coumarin I-fluorescent molecular probe CI was designed and synthesized. Its structure was characterized by 1H NMR, 13C NMR, GC / MS and elemental analysis, and its spectral properties were investigated. The results show that CI can specifically recognize I- in neutral buffer solution in common anions (F-, Cl-, Br-, I-, AcO-, HSO-4, H2PO-4) - caused a blue shift of absorption spectra of 80 nm, a blue shift of fluorescence spectra of 6 nm and a fluorescence enhancement of 5.9-fold, and fluorescence of the solution changed from yellow-green to bright blue. The presence of other anions did not interfere with the CI detection of I-.